不同配筋形式溷凝土剪力墙受剪性能试验研究.pdfVIP

第 38 卷 第 6 期 建 　筑 　结 　构 2008 年 6 月 不同配筋形式混凝土剪力墙受剪性能试验研究 孙建超 , 　徐培福 , 　肖从真 , 　孙慧中 , 　王翠坤 ( 中国建筑科学研究院 ,北京 100013) [摘要] 　通过 13 片高宽比为 15 、轴压比为 05 的不同形式混凝土墙抗震性能试验研究 ,对比了不同形式剪力墙受 剪破坏形态 、极限承载力及延性性能 。试验表明:截面两端设置型钢 、钢管或核芯柱的混凝土墙及墙内设置型钢或 钢筋暗斜撑的混凝土墙 ,可不同程度地提高剪力墙受剪承载力及延性 ;增加墙体分布筋配筋率也可提高剪力墙受 剪承载力 ,但配筋率过高时 ,其延性很差 。提出了两端设置型钢及墙内设置暗斜撑的混凝土剪力墙受剪承载力设计 计算公式 ,计算结果与试验比较吻合 。还提出了剪力墙受剪截面控制条件的建议公式 。 [ 关键词] 　混凝土剪力墙 ; 小剪跨比; 受剪性能 ; 暗斜撑 ; 型钢 ; 高配筋率 Experimental study on shear behavior of concrete wall with different types of reinforcement Sun Jianchao , Xu Peifu , Xiao Congzhen , Sun Huizhong , Wang Cuikun (China Academy of Building Research , Beijing 100013 , China) Abstract :By quasistatic test of 13 wall specimens , the shear properties are studied for the shear failure mode , bearing capacity and hysteretic behavior of different types of shear walls. The height to width ratio for the specimens is 15 , and the axial compression ratio is 05. The test results show that embedded steel shapes or core columns at two ends and the concealed bracing in shear wall can improve the bearing capacity and ductility of shear wall . Increasing of reinforcement can also increase the bearing capacity , but ultra high reinforcement may cause poor ductility. The recommended formula is quite consistent with experimental data . The shear force limitation for concrete wall section is also suggested. Keywords :concrete shear wall ; small shear span ratio ; shear behavior ; concealed bracing ; steel shapes ; high reinforcement ratio ) 1 　 引言 距墙底